... really bounce at all. The reason for this is because balls have elastic in them. ("The elasticity is an objects property of changing shape when the deforming force is moved"). When an elastic ball is bounced on a hard surface, the shape of the ball deforms and the kinetic energy is converted and stored as potential energy. But when the ball returns to its original shape, potential energy is reconverts back to kinetic energy, and this will make the ball bounce. I also predict that while the ball is bouncing it will loose its energy and this is why it slows down bouncing after a little while. If a ball does not have air inside it, the ball will not bounce well. With this information, I can predict that if the ball is heated up, it will bounce more than the ball heated up but with a low temperature. Like ...

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